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PDF MC1723C Data sheet ( Hoja de datos )
| Número de pieza | MC1723C | |
| Descripción | Voltage Regulator | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Voltage Regulator
The MC1723C is a positive or negative voltage regulator designed to
deliver load current to 150 mAdc. Output current capability can be increased
to several amperes through use of one or more external pass transistors.
MC1723C is specified for operation over the commercial temperature range
(0° to +70°C).
• Output Voltage Adjustable from 2.0 Vdc to 37 Vdc
• Output Current to 150 mAdc Without External Pass Transistors
• 0.01% Line and 0.03% Load Regulation
• Adjustable Short Circuit Protection
Order this document by MC1723C/D
MC1723C
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
Figure 1. Representative Schematic Diagram
VCC VC
12 11
P SUFFIX
PLASTIC PACKAGE
CASE 646
500
6.2V
15k
25k 1.0k
1.0k
15k
5.0pF
30k
100
6.2V
5.0k
300
20k
150
6 Vref
57
Noninverting
Input
VEE 4
Inverting
Input
Vz
9
6.2V
10
VO
13
Compensation
2 Current
Limit
Current
3 Sense
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
ORDERING INFORMATION
Device
Alternate
Operating
Temperature
Range
Package
MC1723CD
–
MC1723CP LM723CN
µA723PC
SO–14
TA = 0° to +70°C Plastic DIP
Figure 2. Typical Circuit Connection
12
Vin
11
6
R3
5
Cref
(7 < VO < 37)
MC1723C
7
10
2
3
4
C1
13
RSC
100pF
VO
R1
R2
^VO
7
R1 + R2
R2
ISC =
Vsense
RSC
For best results 10 k < R2 < 100 k
For minimum drift R3 = R1 | | R2
=
0.66
RSC
at TJ = + 25°C
Figure 3. Typical NPN Current Boost Connection
Vin = 20Vdc
0.1µF
2N3055 or Equiv
12 10
11 2
MC1723C
3
64
5 C1
13
7
RSC = 0.33
VO = +15Vdc
IL = 2Adc max
100pF
12k
10k
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 5
1
1 page  
MC1723C
Figure 16. Typical Connection for 2 < VO < 7
12
+Vin
11
R1
Cref R2
6
5
MC1723C
10
2
3
4
13
7
RSC
Vout
R3
1000pF
^VO
7
R2
R1 + R2
^ISC =
Vsense
RSC
0.66
RSC
at TJ = + 25°C
For best results 10 k < R1 +R2 < 100 k
For minimum drift R3 = R1 R2
+ Vin
Vout
ISC
IL
Figure 17. Foldback Connection
12 10 RSC
11
2 RA
6 10k
MC1723C
4
5 13 100pF
Vout
R1
3
7
R2
Iknee
RA =
a
1–a
10 kΩ where
RSC
=
Vsense
(1–a) ISC
a = Vsense
VO
Iknee
ISC
–1
Figure 18. +5.0 V, 1.0 A Switching Regulator
Figure 19. +5.0 V, 1.0 A High Efficiency Regulator
2N4918 or Equiv
Vin
+10V
100
11
12
6
2.2k 1.0M
1.0k
0.1µF
5.1k
5
MC1723C
7
1mH
1N4001
or Equiv
Vin1
+6.5V
Vin2
+10V
Vout
0.1µF
12
10 10 +5V
11
2
3
+
4
100µF
–
6
2.0k
5
5.1k
MC1723C
7
Vout
0.33 +5.0V
10
2
3
4
13
1000pF
Figure 20. +15 V, 1.0 A Regulator with Remote Sense
Vin
+20V
0.1µF
2N3055 or Equiv
12 10
11 2
3
MC1723C
64
5 100pF
13
7
0.33
12k
10k
+ Sense Vout
+15V
Load
– Sense
Figure 21. –15 V Negative Regulator
12
11
6
5
+
Vref
Vin = –20 V
MC1723C
7
–
10
4
100pF
13
V2 = 14V
12k
+
+
Vref
10µF
–
10k
–
Vout = –15 V
2N3055
or Equiv
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MC1723C.PDF ] | |
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